github PSP-Archive/ARK-4 rev195
r195: Vita Extra RAM Update

latest releases: rev199, v1757019383, v1756922700...
one month ago

This release aims at making the use of Extra RAM feature on PS Vita more stable.

The following information is known about ePSP Extra RAM on PS Vita:

  • The first 16MB are safe to use.
  • The other 16MB is used by pspemu at different regions, some of which we haven't fully mapped out yet. Meaning that while you can make use of (some of it), it is highly volatile and prone to random issues.

To make the Extra RAM feature as stable as possible while maintaining the most compatibility, the following has been done:

  • The standard behavior of the Extra RAM feature is to only unlock the first 16MB.
  • Inferno Cache size has been lowered from 4MB to 1MB.
  • Partition 11 (Extra RAM as seen by the ePSP kernel) can only see the first 16MB.
  • Homebrew that make use of Extra RAM via MEMSIZE=1 flag will be allowed to unlock as much memory as possible, but do know that while this makes more homebrews boot, it will also result in unstable and undefined behavior.

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